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Wind forced low frequency variability of the East Australia Current

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Hill, KL and Rintoul, SR and Coleman, R and Ridgway, KR (2008) Wind forced low frequency variability of the East Australia Current. Geophysical Research Letters, 35 (L08602). pp. 1-5. ISSN 0094-8276

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Abstract

A 62 year record of temperature and salinity from a
coastal station off southeast Australia shows a strong positive
trend and quasi-decadal variability but the cause of the
observed changes has not been explained. The temperature
and salinity variations are highly correlated. The increase in
temperature and salinity with time agrees closely with the
mean meridional gradient of water properties along the
continental slope, suggesting that changes in strength of
the poleward extension of the East Australian Current are
responsible for the observed variability. Interannual
temperature and salinity changes are correlated (r = 0.7)
with basin-scale winds and with transport through the
Tasman Sea estimated from Island Rule, with the changes
at the western boundary lagging the wind forcing by three
years. We conclude that the trend and decadal variability in
the coastal temperature and salinity record reflect the
response of the subtropical gyre and western boundary
current to basin-scale wind forcing. Citation: Hill, K. L., S. R.
Rintoul, R. Coleman, and K. R. Ridgway (2008), Wind forced low
frequency variability of the East Australia Current

Item Type: Article
Keywords: East Australia Current, physical oceanography, western boundary currents, decadal ocean variabliity, air/sea interactions
Journal or Publication Title: Geophysical Research Letters
Page Range: pp. 1-5
ISSN: 0094-8276
Identification Number - DOI: 10.1029/2007GL032912
Additional Information:

Copyright 2008 American Geophysical Union.

Date Deposited: 06 Mar 2009 03:11
Last Modified: 18 Nov 2014 03:56
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